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超声法制备金掺杂的纳米YBa2Cu3O7材料研究

Preparation of YBCO with nano-Au-doping by ultrasonic process

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【作者】 林珊陈淑卿章文贡陈礼辉

【Author】 LIN Shan~1,CHEN Shuqing~(2,3),ZHANG Wengong~2,CHEN Lihui~1 (1.College of Materials Engineering,Fujian Agriculture and Forestry University,Fuzhou 350002; 2.College of Chemistry and Materials and Science,Fujian Normal University,Fuzhou 350007; 3.Petro China Sichuan Petrochemical Co.Ltd.,Chengdu 611930)

【机构】 福建农林大学材料工程学院福建师范大学化学与材料学院中国石油四川石化有限责任公司

【摘要】 将高温固相法制得的YBCO研磨,于无水乙醇中进行超声分散获得纳米YBCO/乙醇溶胶,随后掺入纳米金溶胶,浓缩、干燥得金掺杂的YBCO材料.结果发现,纳米金掺杂的YBCO/乙醇溶胶中粒子形成纳米链;掺杂适量金提高了YBCO的晶化程度;掺金量为0.025wt%~0.500wt%时,金/YBCO材料的超导转变温度T_e为93.84~92.01 K,但掺杂1%的金时,样品超导性能消失.若能进一步控制好掺金量,金掺杂YBCO的T_e也会相应得到提高.

【Abstract】 YBCO bulk material by high temperature solid state reaction was milled and dispersed by ultrasonic process in alcohol solvent and nanoscale YBCO/alcohol sol was obtained.Then it was mixed with nano-Au sol and YBCO doped with Au materials were prepared after concentration and drying.The results show that the nanoparticles form nano chain in YBCO/ethanol sol doped with nano-Au.The degree of crystallization of YBCO is increased by doping with an appropriate amount of Au.Doped with 0.025%~0.500%by weight percentage of Au,the T_c of Au/YBCO materials are 93.84~92.01 K,but the superconductivity disappear with 1%of Au.The T_c YBCO doped with Au will be improved accordingly if the amount of Au can be further controlled.

【关键词】 超声YBCO掺杂
【Key words】 ultrasonicAuYBCOdop
【基金】 国家自然科学基金资助项目(30671637);福建省纳米重大专项资助项目(2005HZ01-5);福建省自然科学基金资助项目(2010J01271);福建省生物质材料工程技术研究中心建设项目(2008H2002)
  • 【文献出处】 华中师范大学学报(自然科学版) ,Journal of Huazhong Normal University(Natural Sciences) , 编辑部邮箱 ,2011年01期
  • 【分类号】TB383.1
  • 【被引频次】1
  • 【下载频次】23
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